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/*! \file
    \brief Unit tests for thread-level GEMM
*/
#include "cutlass/arch/wmma.h"

#ifdef CUTLASS_ARCH_WMMA_SM70_ENABLED

#include "../../common/cutlass_unit_test.h"

#include "cutlass/aligned_buffer.h"
#include "cutlass/half.h"
#include "cutlass/layout/matrix.h"

#include "cutlass/gemm/warp/mma_tensor_op_wmma.h"

#include "cutlass/epilogue/warp/fragment_iterator_wmma_tensor_op.h"
#include "cutlass/epilogue/warp/tile_iterator_wmma_tensor_op.h"

#include "cutlass/core_io.h"
#include "cutlass/util/host_tensor.h"
#include "cutlass/util/tensor_view_io.h"

#include "cutlass/util/reference/host/tensor_fill.h"
#include "cutlass/util/reference/host/tensor_compare.h"
#include "cutlass/util/reference/host/gemm.h"

/////////////////////////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////////////////////////

TEST(SM70_Epilogue_warp_FragmentIterator, wmma_f16_64x64x16) {
    using Shape = cutlass::gemm::GemmShape<64, 64, 16>;
    using InstructionShape = cutlass::gemm::GemmShape<16, 16, 16>;
    using ElementA = cutlass::half_t;
    using ElementB = cutlass::half_t;
    using ElementC = cutlass::half_t;
    using LayoutA = cutlass::layout::RowMajor;
    using LayoutB = cutlass::layout::ColumnMajor;
    using LayoutC = cutlass::layout::RowMajor;

    using Policy = cutlass::gemm::warp::MmaTensorOpPolicy<
            cutlass::arch::Wmma<InstructionShape, ElementA, LayoutA, ElementB,
                                LayoutB, ElementC, LayoutC,
                                cutlass::arch::OpMultiplyAdd>,
            cutlass::MatrixShape<1, 1> >;

    using MmaTensorOp =
            cutlass::gemm::warp::MmaTensorOpWmma<Shape, ElementA, LayoutA,
                                                 ElementB, LayoutB, ElementC,
                                                 LayoutC, Policy>;

    using FragmentIterator =
            cutlass::epilogue::warp::FragmentIteratorWmmaTensorOp<
                    Shape, typename MmaTensorOp::Policy::Operator::Shape,
                    typename MmaTensorOp::Policy::Operator::ElementC,
                    typename MmaTensorOp::Policy::Operator::FragmentC,
                    cutlass::layout::RowMajor>;

#if 0
  //
  // Enable this code block to print comments for debugging.
  //

  std::cout << "FragmentIterator::Policy = { \n"
    << "  OperatorCount:  (" << FragmentIterator::Policy::OperatorCount::kRow <<", "<<FragmentIterator::Policy::OperatorCount::kColumn << ")\n"
    << "  kRowPerIterations: " << FragmentIterator::Policy::kRowsPerIteration << "\n"
    << "  kWmmaFragmentsPerAccess: " << FragmentIterator::Policy::kWmmaFragmentsPerAccess << "\n"
    << "  kIterations: " << FragmentIterator::Policy::kIterations << "\n"
    << " }" << std::endl;

  typename MmaTensorOp::FragmentC accum;

  std::cout<<"MmaTensorOp::FragmentC::kElements " <<MmaTensorOp::FragmentC::kElements<<"\n";
#endif
}

TEST(SM70_Epilogue_warp_FragmentIterator, wmma_f32_64x64x16) {
    using Shape = cutlass::gemm::GemmShape<64, 64, 16>;
    using InstructionShape = cutlass::gemm::GemmShape<16, 16, 16>;
    using ElementA = cutlass::half_t;
    using ElementB = cutlass::half_t;
    using ElementC = float;
    using LayoutA = cutlass::layout::RowMajor;
    using LayoutB = cutlass::layout::ColumnMajor;
    using LayoutC = cutlass::layout::RowMajor;

    using Policy = cutlass::gemm::warp::MmaTensorOpPolicy<
            cutlass::arch::Wmma<InstructionShape, ElementA, LayoutA, ElementB,
                                LayoutB, ElementC, LayoutC,
                                cutlass::arch::OpMultiplyAdd>,
            cutlass::MatrixShape<1, 1> >;

    using MmaTensorOp =
            cutlass::gemm::warp::MmaTensorOpWmma<Shape, ElementA, LayoutA,
                                                 ElementB, LayoutB, ElementC,
                                                 LayoutC, Policy>;

    using FragmentIterator =
            cutlass::epilogue::warp::FragmentIteratorWmmaTensorOp<
                    Shape, typename MmaTensorOp::Policy::Operator::Shape,
                    typename MmaTensorOp::Policy::Operator::ElementC,
                    typename MmaTensorOp::Policy::Operator::FragmentC,
                    cutlass::layout::RowMajor>;

#if 0
  //
  // Enable this code block to print comments for debugging.
  //
  std::cout << "FragmentIterator::Policy = { \n"
    << "  OperatorCount:  (" << FragmentIterator::Policy::OperatorCount::kRow <<", "<<FragmentIterator::Policy::OperatorCount::kColumn << ")\n"
    << "  kRowPerIterations: " << FragmentIterator::Policy::kRowsPerIteration << "\n"
    << "  kWmmaFragmentsPerAccess: " << FragmentIterator::Policy::kWmmaFragmentsPerAccess << "\n"
    << "  kIterations: " << FragmentIterator::Policy::kIterations << "\n"
    << " }" << std::endl;

  typename MmaTensorOp::FragmentC accum;

  std::cout<<"MmaTensorOp::FragmentC::kElements " <<MmaTensorOp::FragmentC::kElements<<"\n";

#endif
}
/////////////////////////////////////////////////////////////////////////////////////////////////
#endif  // CUTLASS_ARCH_WMMA_SM70_ENABLED
